کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
28447 44075 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photochemical synthesis of chlorine gas from iron(III) and chloride solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Photochemical synthesis of chlorine gas from iron(III) and chloride solution
چکیده انگلیسی

A new method to produce chlorine gas is presented in this paper. The photo-production of chlorine involves the illumination of an acidified aqueous solution of iron(III) and chloride by UV at 365 nm. This induces a photochemical reduction of iron(III) to iron(II) and the formation of Cl radicals. The radicals were then rapidly scavenged by the chloride ions to form Cl2− which further dissociated to form molecular chlorine. The effects of pH, the initial iron(III) and chloride concentrations, and the preparation of the iron(III) and chloride solutions on the photo-production of chlorine were studied through experiments and numerical modelling. It was found that a combination of 0.5 M iron(III) and chloride ions at a pH value of 1 provided the optimum condition for chlorine photo-production. The amount of chlorine produced decreased at chloride concentrations greater than 500 mM and at pH values above 1. This is attributed to the drop in the concentration of [Fe(OH)5Cl]2+ which is believed to be the main species for Cl radicals formation as well as the subsequent generation of chlorine gas at different chloride concentrations and pHs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 183, Issues 1–2, 30 September 2006, Pages 126–132
نویسندگان
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